—What do you think of the price of these computers?—They are at least equal in price to i

问题补充：

—What do you think of the price of these computers?

—They are at least equal in price to, if not cheaper than, in other companies.

A. it

B. ones

C. that

D. the ones

答案：

A. it

B. ones

C. that

(答案→)D. the ones

解析：句意：--你认为这些电脑的价格怎样？--它们如果不必其他的公司便宜的话，至少应该在价格上是相同的。这里应该相比的是电脑的复数，故排除AC；ones代替的是可数名词的复数，但是并非特指；the ones代替的是可数名词的复数，但是特指，因为这里有in other companies来修饰，表示特指其他公司的电脑，表示特指，故选D。